fix ConcurrentModificationException in async command sending#13626
Open
Gerrygames wants to merge 2 commits intoPaperMC:mainfrom
Open
fix ConcurrentModificationException in async command sending#13626Gerrygames wants to merge 2 commits intoPaperMC:mainfrom
Gerrygames wants to merge 2 commits intoPaperMC:mainfrom
Conversation
Warriorrrr
approved these changes
Feb 14, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
fixes ConcurrentModificationException in async command sending (issue #11101)
the CME was caused by
map.put(this.dispatcher.getRoot(), rootCommandNode);iterating the roots children asynchronously for hash code calculation. this is fixed by copying the whole root node.different approach to #13233 without locking/synchronization